The males begin to notice the females. They show off in front of them.

雄天鹅开始留意雌天鹅了。他们在她们示着。

And what the EU is dangling is this prospect of as much as a billion dollars in financial aid.

欧盟向突尼斯示的，拿到高达10亿美元财政援助的可能性。

Different feathers have different patterns of colour, suggesting that Cretaceous dinosaurs-flying or otherwise-used their feathers for display.

不同的羽毛有不同的颜色样式，这表明白垩纪时期的会飞恐龙和陆地恐龙都利用羽毛来示自己。